You have to pry up on that plastic clip it locks it in place. A flat head screw driver usualy helps me get the job done. And dont forget to grease the new cable or youll be like me and have to do the job twice!
just squeeze real hard, and haul back on the cluster at the same time, to get it off, it may take a couple minuts but it will come, i just did 2 of the last week.